Internal combustion engine



June 26, 1934. F. LANG INTERNAL COMUSTION ENGINE Filed Nov; 13, 1931 nga.

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Patented June 26, 1934 UNITED' STATES PATENT OFFICE l,964,667 INTERNAL COMBUSTION ENGINE Franz Lang, Munich, Germany, assignor to Lan- V ova Aktiengesellschaft, Vaduz, Liechtenstein Application November 13, 1931, Serial No. 574,!)13 In Germany November 15, 1930 4 Claims. (Cl. 184-18) A method which has been used for facilitating cylinder of the engine, and the second step inthe starting of an internal combustion engine cludes the injection of the fuel but both steps consists in causing a solvent liquid to trickle down are carried out at specific positions of the piston. the inner surface of the cylinder, in order to The first liquid which is sprayed into the cylinder and ease the movement of the piston. ture of paraffin oil and benzol which is vaporized In my invention I also use a solvent liquid during the compression stroke and facilitates igfor the same purpose, but I spray the same into nition. This liquid also actsto dissolve the oil the combustion chamber of the cylinder, at a on the walls of the cylinder to thereby release part near the position of the piston at the end the piston from a gummed cylinder wall. 66 of its outstroke. By injecting the liquid, in the What I claim as my invention and desire to form of spray, I secure better distribution thereof secure by Letters Patent of the United States is:- on the cylinder wall. In some cases the liquid, 1. The combination of an internal combustion vaporized during the compression stroke, facilengine cylinder, a piston working -in said cylitates ignition. inder, and a nozzle opening into the combustion 70 The invention is illustrated in the accompanychamber of said cylinder near the end position ing drawing, in which Figs. 1, 2 and 3 are partial of said piston on its outstroke, said nozzle being vertical sections of the cylinder and piston, with adapted for spraying a liquid oil solvent into the piston in different positions. said cylinder.

In the drawing a designates the cylinder, b 2. A device for facilitating the starting of an 75 the piston, and c a nozzle for injecting fuel. In internal combustion engine having a cylinder and Fig. 1 the piston is shown at the end of its out-1 piston therefor, compriing permanent means stroke. A short distance above the face of the opening into the cylinder adjacent the end or 'has a non-return valve e for admitting to` the of the cylinder.

cylinder, from a tube f, the liquid for dissolving 3. A device for facilitating the starting of an the lubricating oil. As indicated in Fig. 1 by internalcombustion engine having acylinder and arrow lines within the cylinder the solvent is piston therefor, comprising a nozzle opening into sprayed forcbly, and much of the spray strikes the cylinder near the end or bottom position of 85 the cylinder wall on the opposite side and is the piston on its outstroke and having a nonfiung back, so that it becomes well distributed return valve cooperating therewith, said nozzle over the inner surface of the combustion being adapted to spray an oil solvent against the chamber. walls of the cylinder and when the piston reaches Fig. 2 shows the piston shortly before complethe top of its stroke the vaporzed oil solvent 90 tion of its inward stroke, when air for combusfacilitating ignition. tion has been compressed together with such part 4. A device for facilitating the starting of an of the solvent liquid as has been vaporized. In internal combustion engine, comprising perma- 40 at or near the end of the compression stroke. or bottom position of the piston of the engine 95 This is followed by self-ignition. on its outstroke to spray an oil solvent into the The device which has been described operates combustion chamber of the engine to ease the in two steps, the first of which includes the spraymovement of the piston.

mg of a combustible liquid oil solvent in the FRANZ LANG. 100 

